如何通过Device日志查看资源占用过高的信息

有些业务程序运行异常的情况可能由于Device的内存被耗尽、CPU占用率过高、文件句柄数达到上限、进程数达到上限等问题引起，因此在定位问题时，我们可以通过日志中的一些关键信息排查这部分问题。

在Host侧服务器上，在某个有读、写、执行权限的目录（如“/var/log/npu/report”，下文以此路径为例）下执行msnpureport工具，通过msnpureport工具导出Device日志。
msnpureport工具命令示例如下，其中/usr/local/Ascend是驱动包的默认安装路径，请根据实际情况替换。
```
/usr/local/Ascend/driver/tools/msnpureport -f
```
Device侧系统进程产生的运行日志默认在/var/log/npu/report/*/slog/device-os-id/run/device-os/目录下，其中，*表示时间戳，device-os-id中的id表示Device ID。

在Device日志中，通过SYSMONITOR模块的日志查看资源占用情况，包括内存占用率、CPU占用率、文件句柄数、僵尸进程数。

查看内存占用率

memory usage alarm：出现了内存占用率超过阈值上限（90%）的告警。

memory usage stat：一个周期（一小时）结束时，如果周期内有告警事件，打印该周期的统计结果。

slog/dev-os-0/run/device-os/device-os_19700101080010358.log:16:[INFO] SYSMONITOR(2150,log-daemon):1970-01-01-08:00:09.728.115 [sys_monitor_frame.c:60][tid:2168]>>> system resource monitor start, period: 10000ms
slog/dev-os-0/run/device-os/device-os_19700101080010358.log:151:[INFO] SYSMONITOR(2150,log-daemon):2024-04-26-16:22:03.421.505 [sys_memory_monitor.c:233][tid:2168]>>> memory usage alarm: 93.7%
slog/dev-os-0/run/device-os/device-os_19700101080010358.log:165:[INFO] SYSMONITOR(2150,log-daemon):2024-04-26-16:22:07.581.257 [sys_memory_monitor.c:225][tid:2168]>>> PID VSZ %VSZ COMMAND
slog/dev-os-0/run/device-os/device-os_19700101080010358.log:166:[INFO] SYSMONITOR(2150,log-daemon):2024-04-26-16:22:07.741.422 [sys_memory_monitor.c:225][tid:2168]>>> 2112 950m 2.1 /usr/bin/mdc/base-plat/aosservice/iammgr
slog/dev-os-0/run/device-os/device-os_19700101080010358.log:167:[INFO] SYSMONITOR(2150,log-daemon):2024-04-26-16:22:07.741.519 [sys_memory_monitor.c:225][tid:2168]>>> 2096 969m 2.1 /var/slogd
slog/dev-os-0/run/device-os/device-os_19700101080010358.log:168:[INFO] SYSMONITOR(2150,log-daemon):2024-04-26-16:22:07.741.529 [sys_memory_monitor.c:225][tid:2168]>>> 2142 734m 1.6 /var/resource_mgr
slog/dev-os-0/run/device-os/device-os_19700101080010358.log:169:[INFO] SYSMONITOR(2150,log-daemon):2024-04-26-16:22:07.741.537 [sys_memory_monitor.c:225][tid:2168]>>> 2088 726m 1.6 /usr/bin/mdc/base-plat/process-manager/process-manager
slog/dev-os-0/run/device-os/device-os_19700101080010358.log:170:[INFO] SYSMONITOR(2150,log-daemon):2024-04-26-16:22:07.741.544 [sys_memory_monitor.c:225][tid:2168]>>> 2150 622m 1.4 /var/log-daemon
slog/dev-os-0/run/device-os/device-os_19700101080010358.log:171:[INFO] SYSMONITOR(2150,log-daemon):2024-04-26-16:22:07.741.550 [sys_memory_monitor.c:225][tid:2168]>>> 2241 522m 1.1 /var/tsdaemon
slog/dev-os-0/run/device-os/device-os_19700101080010358.log:172:[INFO] SYSMONITOR(2150,log-daemon):2024-04-26-16:22:07.741.558 [sys_memory_monitor.c:225][tid:2168]>>> 2195 510m 1.1 /usr/bin/mdc/base-plat/process-manager/proc_launcher
slog/dev-os-0/run/device-os/device-os_19700101080010358.log:173:[INFO] SYSMONITOR(2150,log-daemon):2024-04-26-16:22:07.741.564 [sys_memory_monitor.c:225][tid:2168]>>> 2155 486m 1.0 /var/dmp_daemon
slog/dev-os-0/run/device-os/device-os_19700101080010358.log:174:[INFO] SYSMONITOR(2150,log-daemon):2024-04-26-16:22:07.741.570 [sys_memory_monitor.c:225][tid:2168]>>> 2222 284m 0.6 /var/hdcd
slog/dev-os-0/run/device-os/device-os_19700101080010358.log:175:[INFO] SYSMONITOR(2150,log-daemon):2024-04-26-16:22:07.741.576 [sys_memory_monitor.c:225][tid:2168]>>> 2211 284m 0.6 /var/hdcd
slog/dev-os-0/run/device-os/device-os_19700101080010358.log:176:[INFO] SYSMONITOR(2150,log-daemon):2024-04-26-17:17:33.503.564 [sys_memory_monitor.c:251][tid:2168]>>> memory usage stat: minUsage= 2.3%, maxUsage=93.7%, avgUsage= 2.6%, alarmNum=1, resumeNum=1, duration=10000ms

查看CPU占用率

cpu usage alarm：出现了cpu占用率超过阈值上限（90%）的告警。

cpu usage stat：一个周期（一小时）结束时，如果周期内有告警事件，打印该周期的统计结果。

slog/dev-os-0/run/device-os/device-os_19700101080010358.log:16:[INFO] SYSMONITOR(2150,log-daemon):1970-01-01-08:00:09.728.115 [sys_monitor_frame.c:60][tid:2168]>>> system resource monitor start, period: 10000ms
slog/dev-os-0/run/device-os/device-os_19700101080010358.log:151:[INFO] SYSMONITOR(2150,log-daemon):2024-04-26-16:22:03.421.505 [sys_cpu_monitor.c:176][tid:2168]>>> cpu usage alarm: 95.2%
slog/dev-os-0/run/device-os/device-os_19700101080010358.log:165:[INFO] SYSMONITOR(2150,log-daemon):2024-04-26-16:22:07.581.257 [sys_cpu_monitor.c:168][tid:2168]>>> PID CPU %CPU COMMAND
slog/dev-os-0/run/device-os/device-os_19700101080010358.log:166:[INFO] SYSMONITOR(2150,log-daemon):2024-04-26-16:22:07.741.422 [sys_cpu_monitor.c:168][tid:2168]>>> 2112 0 12.1 /usr/bin/mdc/base-plat/aosservice/iammgr
slog/dev-os-0/run/device-os/device-os_19700101080010358.log:167:[INFO] SYSMONITOR(2150,log-daemon):2024-04-26-16:22:07.741.519 [sys_cpu_monitor.c:168][tid:2168]>>> 2096 0 2.1 /var/slogd
slog/dev-os-0/run/device-os/device-os_19700101080010358.log:168:[INFO] SYSMONITOR(2150,log-daemon):2024-04-26-16:22:07.741.529 [sys_cpu_monitor.c:168][tid:2168]>>> 2142 0 1.6 /var/resource_mgr
slog/dev-os-0/run/device-os/device-os_19700101080010358.log:169:[INFO] SYSMONITOR(2150,log-daemon):2024-04-26-16:22:07.741.537 [sys_cpu_monitor.c:168][tid:2168]>>> 2088 0 1.6 /usr/bin/mdc/base-plat/process-manager/process-manager
slog/dev-os-0/run/device-os/device-os_19700101080010358.log:170:[INFO] SYSMONITOR(2150,log-daemon):2024-04-26-16:22:07.741.544 [sys_cpu_monitor.c:168][tid:2168]>>> 2150 0 1.4 /var/log-daemon
slog/dev-os-0/run/device-os/device-os_19700101080010358.log:171:[INFO] SYSMONITOR(2150,log-daemon):2024-04-26-16:22:07.741.550 [sys_cpu_monitor.c:168][tid:2168]>>> 2241 0 1.1 /var/tsdaemon
slog/dev-os-0/run/device-os/device-os_19700101080010358.log:172:[INFO] SYSMONITOR(2150,log-daemon):2024-04-26-16:22:07.741.558 [sys_cpu_monitor.c:168][tid:2168]>>> 2195 0 1.1 /usr/bin/mdc/base-plat/process-manager/proc_launcher
slog/dev-os-0/run/device-os/device-os_19700101080010358.log:173:[INFO] SYSMONITOR(2150,log-daemon):2024-04-26-16:22:07.741.564 [sys_cpu_monitor.c:168][tid:2168]>>> 2155 0 1.0 /var/dmp_daemon
slog/dev-os-0/run/device-os/device-os_19700101080010358.log:174:[INFO] SYSMONITOR(2150,log-daemon):2024-04-26-16:22:07.741.570 [sys_cpu_monitor.c:168][tid:2168]>>> 2222 0 0.6 /var/hdcd
slog/dev-os-0/run/device-os/device-os_19700101080010358.log:175:[INFO] SYSMONITOR(2150,log-daemon):2024-04-26-16:22:07.741.576 [sys_cpu_monitor.c:168][tid:2168]>>> 2211 0 0.6 /var/hdcd
slog/dev-os-0/run/device-os/device-os_19700101080010358.log:176:[INFO] SYSMONITOR(2150,log-daemon):2024-04-26-17:17:33.503.564 [sys_cpu_monitor.c:184][tid:2168]>>> cpu usage stat: minUsage= 1.8%, maxUsage=95.2%, avgUsage= 3.6%, alarmNum=1, resumeNum=1, duration=10000ms

查看文件句柄数

fd usage alarm：出现了文件句柄使用率超过阈值上限（90%）的告警。

fd usage stat：一个周期（一小时）结束时，如果周期内有告警事件，打印该周期的统计结果。

[INFO] SYSMONITOR(2170,log-daemon):2024-05-15-03:17:43.820.774 [sys_fd_monitor.c:156][tid:2187]>>> fd total: 4454775, used: 4445866, fd usage alarm: 99.8%
[INFO] SYSMONITOR(2170,log-daemon):2024-05-15-03:17:43.820.865 [sys_fd_monitor.c:126][tid:2187]>>> sysmonitor fd process top three
[INFO] SYSMONITOR(2170,log-daemon):2024-05-15-03:17:43.933.536 [sys_fd_monitor.c:147][tid:2187]>>> pid: 12170 , fd used: 4445532
[INFO] SYSMONITOR(2170,log-daemon):2024-05-15-03:17:43.933.641 [sys_fd_monitor.c:147][tid:2187]>>> pid: 2271 , fd used: 28
[INFO] SYSMONITOR(2170,log-daemon):2024-05-15-03:17:43.933.650 [sys_fd_monitor.c:147][tid:2187]>>> pid: 2116 , fd used: 26
[INFO] SYSMONITOR(2170,log-daemon):2024-05-15-03:27:43.856.787 [INFO] SYSMONITOR(2170,log-daemon):2024-05-15-03:27:43.856.787 [sys_fd_monitor.c:162][tid:2187]>>> fd usage stat: minUsage= 0.0%, maxUsage= 99.8%, avgUsage= 87.3%, alarmNum=1, resumeNum=1, duration=80000ms

查看僵尸进程数

zombie process count alarm：出现了僵尸进程数超过阈值上限（5）的告警。

zombie process count stat：一个周期（一小时）结束时，如果周期内有告警事件，打印该周期的统计结果。

[INFO] SYSMONITOR(2166,log-daemon):2024-05-15-00:01:24.019.292 [sys_zp_monitor.c:119][tid:2195]>>> zombie process count alarm: 98
[INFO] SYSMONITOR(2166,log-daemon):2024-05-15-00:01:24.019.356 [sys_zp_monitor.c:134][tid:2195]>>> zombie process count stat: minCount=0, maxCount=98, avgCount=98, alarmNum=1, resumeNum=0, duration=120000ms

父主题： 常用定位操作